Excelsior-making machine.



No. 679,709. Patented July so, l90l. E. J. STEWART. 1

EXCELSIOB MAKING MACHINE.

(Applicafimi filed Dec. 3, 1900.)

(No Model.) 2 Sheets-Sheet l.

W 6: Q IIIIIMI w l 21 ,[iZVflK' wi Edgar 1672 11? No. 679,709. PatentedJuly 30, l90l. E. J. STEWART.

EXCELSIUB MAKING MACHINE.

I (Application filed Dec. 8. 1900.! (No Model.) 2 Sheets-Sheet 2.

UNITED STATES.

PATENT OFFICE;

EDGAR J. STEWART, OF DES PLAINES, ILLINOIS.

EXCELSlOR-MAKING MACHINE.

SPEGlFICATION forming part of Letters Patent No. 679,709, dated July 30,1901. Application filed December 3,1900. SerialNo. 38,454. (No model.)

T0 at whom it may concern Be it known that I, EDGAR J. STEWART, acitizen of the United States, and a resident of Des Plaines, county ofCook, and State of Illinois, have invented certain new and usefulImprovements in Excelsior-Making Machines, of which the following is aspecification, and which are illustrated in the accompanying drawings,forming a part thereof.

This invention relates to that type of machines in which theshaving-blades and scoring-points are carried by a reciprocating tableto which the material to be reduced is positively and continuously fedby two sets of spur-rollers.

The object of the invention is to provide improved means for actuatingthe feed-rollers; and it consists in the mechanism hereinafter describedand illustrated in the accompanying drawings, in which- Figure 1 is atransverse vertical section of the machine. Fig. 2 is a detailperspective of the same, some of the parts being omitted. Fig. 3 is adetail perspective of the table and one of its ways, and Fig. 4 is adetail of one of the parts of the machine.

The machine is provided with a suitable frame 10, having longitudinalside rails 11 11 and ways 12 12, upon which the table 13, carrying theshavingblades 14 and scoringpoints 15, is adapted to reciprocate. A pairof frames 16 17 rise from the rails 11 l1 and are provided with guideand feed rollers. The guide-rollers 18 18 may be smooth-surfaced idlers,and the feed-rollers 19 are provided with spur-wheels 20 for positivelyengaging the material to force it forward. The rollers 19 are providedwith pinions 21,which are intergeared through the medium of intermediategears 22, mounted upon stud-shafts fixed in the frames 16 17.

The construction of the parts thus far described is substantially thesame as corresponding parts shown in my copending application for patentfiled June 13, 1900, Serial No. 20,199.

One of the roller-shafts 19 of each set of spur-rollers is provided witha skew-gear 23 23, and these gears intermesh with skew-pinions 24 24,fixed upon a shaft 25, journaled in brackets 43 44, secured to the siderails of the frame. This shaft has a gear-wheel 26 intermeshing with apinion 27, fixed upon a suitable stud-shaft carried by the bracket 43,and carrying a gear-wheel 28, which intermeshes with and is driven by apinion 29, mounted upon a shaft, 30, journaled in suitable brackets 3131, fixed to the frame of the machine.

' A pair of ratchet-wheels 32 33 are fixed upon the shaft 30 and areactuated by springpawls 34 35, carried by a slide-bar 36, mounted andadapted to slide laterally in boxes 37 38, carried by brackets attachedto the frame of the machine. The bar 36 is provided with two cam-faces39 and 40, adapted for the engagement of a bracket 42, carried by thetable 13, this bracket being provided with an antifriction-roller 41 forthe purpose of contacting with the cam-faces of the bar. A retaming-pawl45, securedto the frame of the machine, engages one of theratchet-wheels, as shown the wheel 32, for the purpose of preventing therecession of the feed mechanism. The bar 36 is retracted by springshoused within the boxes 37 38, one of such springs being shown at 46.

The operation of the feed mechanism is as follows: The table 13 beingcaused to reciprocate by any preferred means, the roller 41 comes intoengagement with one of the camfaces 39 40 at each end of the stroke ofthe table and forces the bar 36 outwardly, thereby turning the shaft 30and through the chain of gears turning the feed-rollers the necessarydistance to advance the material sufficiently to provide for the nextcut.

The present prevailing practice is'to cut excelsior to the thickness ofone-seventieth of an inch, and the desired thickness is secured in 'thepresent machine by suitably proportioning the cam-faces 39 40 and theseveral gears to which the movement is transmitted to the feed-rollers.

I prefer to mount the slide-bar 36 loosely in the two boxes 37 38 and toprovide two ratchet-wheels, one approximately opposite each of thecam-faces of the bar, so that the movement of the pawl cooperatin g withthis wheel will be identical with the movement of the cam, and it isentirely immaterial whether the bar moves out evenly through its entirelength, and in practice such is not the case, as the pressure upon thebar necwith it while still continuing to engage the skew-pinions 24.

I claim as my invention- 1. In an excelsior-making machine, incombination, feed-rollers for advancing the materia], a reciprocatingblade-carrying table,

a laterally-reciprocating bar 36 1ongitudi-- nally disposed as to thetable, and havingcam-inclines at each end, a bracket on the table forengaging such inclines, a shaft, 30, a ratchet-wheel on the shaft, aspring-pawl carried by the bar 36 engaging the ratchetwheel, and gearconnection between the shaft 30 and the feed-rollers. v

2. In an excelsior-making machine, in combination, a suitable frame, areciprocating blade-carrying table, two sets of intergeared feed-rollersfor advancing material, a skewgear carried by one of the rollers of eachset, a shaft 25, skew-pinions fixed upon the shaft for driving theskew-gears, a shaft, 30, gear connection between the shafts 30 and 25,two ratchet-wheels mounted thereon, a laterallyreciprocatingspring-retracted bar 36 having two cam-faces, spring-pawls carried bythe bar for engaging the ratchet-wheels, and a bracket fixed to thetable for engaging the cam-faces of the bar 36, substantially as described and for the purpose specified EDGAR J. STEWART.

Witnesses:

LOUIS K. GILLsoN,

M. KLATCHER.

